package com.slorea.springcloud.service.impl;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.slorea.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @auther sloera
 * @create 2020/4/1
 */
@Service
public class PaymentServiceImpl implements PaymentService {

    /*
     * @Description 正常访问的方法
     * @param id:
     * @Return java.lang.String
     * @Author SloeraN
     * @Date 2020/4/1 21:39
     */
    public String paymentInfoOk(Integer id) {
        return "线程池:"+Thread.currentThread().getName()+"     paymentInfoOk,id:"+id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfoTimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    })
    public String paymentInfoTimeOut(Integer id) {
        int timeNum = 2;
        // int timeNum = 10/0;
        try {
            TimeUnit.SECONDS.sleep(timeNum);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:"+Thread.currentThread().getName()+"     paymentInfoTimeOut,id:"+id+"  耗时 "+timeNum+"s  ";
    }
    public String paymentInfoTimeOutHandler(@PathVariable("id") Integer id) {
        return "线程池:"+Thread.currentThread().getName()+"     paymentInfoTimeOutHandler,id:"+id+"  fallback出错";
    }

    // 服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreakerFallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), //时间容器期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"), //失败率达到多少次后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("id 不能为负数");
        }
        String serrialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serrialNumber;
    }
    public String paymentCircuitBreakerFallback(@PathVariable("id") Integer id) {
        return "id 不能为负数，请稍后再试 id:"+id;
    }

}
